Most likely refers to
皮埃尔·泰拉伊·德·拜亚尔 (Pierre Terrail de Bayard, c.1473-1524), the French chevalier called 'le chevalier sans peur et sans reproche' ('the knight without fear and beyond reproach'). May also transliterate the Mongolian/Turkic name Bayar (meaning 'joy') or appear in fictional fantasy names. Mainland press more often uses
巴亚尔 or
巴耶 for these names -
拜亚尔 is the subtitle/translator-style rendering.